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Kaitsas R, Kaitsas F, Paolone G, Paolone MG. Ortho-Perio Risk Assessment and timing flowchart for lingual orthodontics in an interdisciplinary adult ortho-perio patient: A case report of ``Perio-Guided'' Orthodontic treatment. Int Orthod 2021; 20:100598. [PMID: 34863642 DOI: 10.1016/j.ortho.2021.10.006] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2021] [Accepted: 10/24/2021] [Indexed: 01/14/2023]
Abstract
INTRODUCTION The treatment of ortho-perio patients is a challenge for the interdisciplinary team. Not only are adult patients with overt perio pathology involved, but any ortho patient, even young ones, can be a perio patient and vice versa. Diagnosis and risk assessment of every ortho-perio patient is essential to establish a correct treatment plan, schedule and prognosis. Orthodontics becomes a ``Perio-Guided" Orthodontic Treatment and Periodontics a "Ortho-Guided Periodontal Treatment". MATERIAL AND METHODS This case report presents a man with a very compromised dentition asking for a complete interdisciplinary rehabilitation treated with a combined ortho-perio treatment in lingual mechanics. The periodontal evaluation confirmed the possibility of performing orthodontic treatment after active periodontal treatment. Treatment objectives were the resolution of the crowding, the correction of the levels of the gingival margin, the bone levelling, the preparation for restorative spaces; the objectives of the latter prior to implant placement were: redistribution of space, optimization of the position of adjacent teeth and their parallelism, exploitation of edentulous sites to correct dental class II and placement of the least number of implants possible. After integrating the conventional perio risk assessment with a new Ortho-Perio Risk Assessment (OPRA), a lingual fixed appliance was applied with the help of miniscrews to correct class II division 2 by substituting the upper right first premolar into a canine and retracting the entire upper arch, while correcting the deep bite and optimising the occlusion. RESULTS At the end of the treatment, the patient had molar relationships of class II on the right and class I on the left with a class I canine and the 14 in the position of 13. Incisal relationships were corrected, the position of the incisors was optimized, the spaces in the upper arch were fully resolved by orthodontics. During the treatment, orthodontics corrected the uneven gingival margin of the anterior teeth and levelled the bone. CONCLUSIONS Correct ortho-perio risk assessment (OPRA) is necessary to plan the risk of expression of the periodontal phenotype in ortho-patient. OPRA and the lingual mechanics allowed an orthodontic resolution of the malocclusion and an enhancement of the perio-implant-restorative contributions. OPRA followed by periodontal therapy and lingual mechanics resolved the malocclusion by improving the restorative peri-implant conditions. Orthodontists and periodontists should be aware of the characteristics of the individual expression of the periodontal phenotype at the beginning of treatment and involve patients in the outcome, sequencing of combined treatments, ortho-perio retention and stability.
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Affiliation(s)
| | - Francesco Kaitsas
- Catholic University of the Sacred Heart, School of Medicine and Surgery, Roma, Italy
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Pinheiro FHDSL, Frota CM, Garib DG, Sathler R, Ozawa TO, Lauris RDCMC, Kato RM, Kurimori ÉT. A Cleft-Customized Occlusal Rating System to Assess Orthodontic Occlusal Improvement in Patients With Unilateral Cleft Lip and Palate. Cleft Palate Craniofac J 2021; 59:54-65. [PMID: 33653126 PMCID: PMC8679178 DOI: 10.1177/1055665621995313] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Objective: This study aimed to develop a new method to quantify occlusal improvement in
patients with unilateral cleft lip and palate (UCLP) who had undergone
orthodontic treatment and to evaluate its reproducibility. Design: A panel of orthodontists decided on the relevance of different occlusal
features to score initial and final 3-dimensional study models and panoramic
radiographs. A subsequent subjective analysis was later performed by a local
orthodontic panel. Setting: The sample was obtained from the orthodontic clinical archives of a hospital
known for the treatment of patients with craniofacial differences. Patients: Thirty-one nonsyndromic patients, 17 males and 14 females, were randomly
selected according to preestablished inclusion/exclusion criteria. Interventions: The records corresponded to the period during which the patients were treated
with conventional multibracket mechanics and adjunctive restorative
procedures. Main Outcome/Measures: The intraclass correlation coefficient measured intraexaminer and
interexaminer agreements. The Spearman correlation test assessed the
relationship between the local orthodontic panel perception and the
improvement scores. Results: Inter- and intra-rater ICCs varied between fair/good to excellent. There was
a strong correlation between the Cleft-Customized Occlusal Rating system
classification of occlusal improvement and the local orthodontic panel’s
perception, thereby enabling the utilization of the interpretation scale by
the panel. Conclusions: The method showed to be a useful tool in quantifying and classifying occlusal
improvement in this specific population. As any other method, some
limitations apply and need to be accounted for.
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Affiliation(s)
| | - Carolina Martins Frota
- Department of Orthodontics, Hospital for Rehabilitation of Craniofacial Anomalies, University of Sao Paulo, Bauru, São Paulo, Brazil
| | - Daniela Gamba Garib
- Department of Orthodontics, Hospital for Rehabilitation of Craniofacial Anomalies and Bauru Dental School, University of Sao Paulo, Bauru, São Paulo, Brazil
| | - Renata Sathler
- Department of Orthodontics, Hospital for Rehabilitation of Craniofacial Anomalies, University of Sao Paulo, Bauru, São Paulo, Brazil
| | - Terumi Okada Ozawa
- Department of Orthodontics, Hospital for Rehabilitation of Craniofacial Anomalies, University of Sao Paulo, Bauru, São Paulo, Brazil
| | | | - Renata Mayumi Kato
- Department of Orthodontics, Hospital for Rehabilitation of Craniofacial Anomalies, University of Sao Paulo, Bauru, São Paulo, Brazil
| | - Érika Tiemi Kurimori
- Department of Orthodontics, Hospital for Rehabilitation of Craniofacial Anomalies, University of Sao Paulo, Bauru, São Paulo, Brazil
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Ercoli C, Caton JG. Dental prostheses and tooth-related factors. J Periodontol 2019; 89 Suppl 1:S223-S236. [PMID: 29926939 DOI: 10.1002/jper.16-0569] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2016] [Revised: 09/01/2017] [Accepted: 09/09/2017] [Indexed: 11/09/2022]
Abstract
OBJECTIVES This narrative review summarizes the current evidence about the role that the fabrication and presence of dental prostheses and tooth-related factors have on the initiation and progression of gingivitis and periodontitis. FINDINGS Placement of restoration margins within the junctional epithelium and supracrestal connective tissue attachment can be associated with gingival inflammation and, potentially, recession. The presence of fixed prostheses finish lines within the gingival sulcus or the wearing of partial, removable dental prostheses does not cause gingivitis if patients are compliant with self-performed plaque control and periodic maintenance. However, hypersensitivity reactions to the prosthesis dental material can be present. Procedures adopted for the fabrication of dental restorations and fixed prostheses have the potential to cause traumatic loss of periodontal supporting tissues. Tooth anatomic factors, root abnormalities, and fractures can act as plaque-retentive factors and increase the likelihood of gingivitis and periodontitis. CONCLUSIONS Tooth anatomic factors, such as root abnormalities and fractures, and tooth relationships in the dental arch and with the opposing dentition can enhance plaque retention. Restoration margins located within the gingival sulcus do not cause gingivitis if patients are compliant with self-performed plaque control and periodic maintenance. Tooth-supported and/or tooth-retained restorations and their design, fabrication, delivery, and materials have often been associated with plaque retention and loss of attachment. Hypersensitivity reactions can occur to dental materials. Restoration margins placed within the junctional epithelium and supracrestal connective tissue attachment can be associated with inflammation and, potentially, recession. However, the evidence in several of the reviewed areas, especially related to the biologic mechanisms by which these factors affect the periodontium, is not conclusive. This highlights the need for additional well-controlled animal studies to elucidate biologic mechanisms, as well as longitudinal prospective human trials. Adequate periodontal assessment and treatment, appropriate instructions, and motivation in self-performed plaque control and compliance to maintenance protocols appear to be the most important factors to limit or avoid potential negative effects on the periodontium caused by fixed and removable prostheses.
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Affiliation(s)
- Carlo Ercoli
- Departments of Periodontics and Prosthodontics, Eastman Institute for Oral Health, University of Rochester, Rochester, NY, USA
| | - Jack G Caton
- Department of Periodontics, Eastman Institute for Oral Health, University of Rochester
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Saga AY, Parra AXG, Silva IC, Dória C, Camargo ES. Orthodontic treatment with passive eruption and mesialization of semi-impacted mandibular third molar in an adult with multiple dental losses. Dental Press J Orthod 2019; 24:36-47. [PMID: 31994645 PMCID: PMC6986187 DOI: 10.1590/2177-6709.24.6.036-047.oar] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2018] [Accepted: 08/15/2019] [Indexed: 12/03/2022] Open
Abstract
Objective: This article describes the orthodontic treatment performed on an adult patient with multiple dental losses. Case report: A female patient, 20 years and 4 months old, presented with the following conditions: absence of teeth #26, #35, #36 and #46; semi-impacted tooth #48; inclined molars adjacent to an edentulous space; canines and premolars in a Class II relationship; a convex profile; biprotrusion; and forced lip sealing. Results: Space in the region of tooth #26 was closed, as well the space of tooth #46; tooth #48 erupted and followed mesial movement passively; space of the region of tooth #35 was maintained for the placement of a dental implant; uprighting of tooth #37 was obtained. Aesthetic and functional goals of the treatment were achieved. Results remained stable 10 years after the end of the treatment. Conclusion: The modified helical loop could be effectively used in orthodontic mechanics to close edentulous spaces. Passive semi-impacted mandibular third molar eruption and mesialization can occur in adults when proper space is provided.
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Affiliation(s)
- Armando Yukio Saga
- Pontifícia Universidade Católica do Paraná, Escola de Ciências da Vida (Curitiba/PR, Brazil)
| | - Ariane Ximenes Graciano Parra
- Pontifícia Universidade Católica do Paraná, Escola de Ciências da Vida, Programa de Pós-Graduação em Odontologia (Curitiba/PR, Brazil)
| | - Isteicy Cortêz Silva
- Pontifícia Universidade Católica do Paraná, Escola de Ciências da Vida, Graduação em Odontologia (Curitiba/PR, Brazil)
| | - Cayana Dória
- Pontifícia Universidade Católica do Paraná, Escola de Ciências da Vida, Programa de Pós-Graduação em Odontologia (Curitiba/PR, Brazil)
| | - Elisa Souza Camargo
- Pontifícia Universidade Católica do Paraná, Escola de Ciências da Vida, Programa de Pós-Graduação em Odontologia (Curitiba/PR, Brazil)
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Ercoli C, Caton JG. Dental prostheses and tooth-related factors. J Clin Periodontol 2019; 45 Suppl 20:S207-S218. [PMID: 29926482 DOI: 10.1111/jcpe.12950] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2016] [Revised: 09/01/2017] [Accepted: 09/09/2017] [Indexed: 11/28/2022]
Abstract
OBJECTIVES This narrative review summarizes the current evidence about the role that the fabrication and presence of dental prostheses and tooth-related factors have on the initiation and progression of gingivitis and periodontitis. FINDINGS Placement of restoration margins within the junctional epithelium and supracrestal connective tissue attachment can be associated with gingival inflammation and, potentially, recession. The presence of fixed prostheses finish lines within the gingival sulcus or the wearing of partial, removable dental prostheses does not cause gingivitis if patients are compliant with self-performed plaque control and periodic maintenance. However, hypersensitivity reactions to the prosthesis dental material can be present. Procedures adopted for the fabrication of dental restorations and fixed prostheses have the potential to cause traumatic loss of periodontal supporting tissues. Tooth anatomic factors, root abnormalities, and fractures can act as plaque-retentive factors and increase the likelihood of gingivitis and periodontitis. CONCLUSIONS Tooth anatomic factors, such as root abnormalities and fractures, and tooth relationships in the dental arch and with the opposing dentition can enhance plaque retention. Restoration margins located within the gingival sulcus do not cause gingivitis if patients are compliant with self-performed plaque control and periodic maintenance. Tooth-supported and/or tooth-retained restorations and their design, fabrication, delivery, and materials have often been associated with plaque retention and loss of attachment. Hypersensitivity reactions can occur to dental materials. Restoration margins placed within the junctional epithelium and supracrestal connective tissue attachment can be associated with inflammation and, potentially, recession. However, the evidence in several of the reviewed areas, especially related to the biologic mechanisms by which these factors affect the periodontium, is not conclusive. This highlights the need for additional well-controlled animal studies to elucidate biologic mechanisms, as well as longitudinal prospective human trials. Adequate periodontal assessment and treatment, appropriate instructions, and motivation in self-performed plaque control and compliance to maintenance protocols appear to be the most important factors to limit or avoid potential negative effects on the periodontium caused by fixed and removable prostheses.
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Affiliation(s)
- Carlo Ercoli
- Departments of Periodontics and Prosthodontics, Eastman Institute for Oral Health, University of Rochester, Rochester, NY, USA
| | - Jack G Caton
- Department of Periodontics, Eastman Institute for Oral Health, University of Rochester
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Hellak A, Schmidt N, Schauseil M, Stein S, Drechsler T, Korbmacher-Steiner HM. Influence on interradicular bone volume of Invisalign treatment for adult crowding with interproximal enamel reduction: a retrospective three-dimensional cone-beam computed tomography study. BMC Oral Health 2018; 18:103. [PMID: 29884150 PMCID: PMC5994012 DOI: 10.1186/s12903-018-0569-4] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2017] [Accepted: 05/31/2018] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND The aim of this study was to use three-dimensional datasets to identify associations between treatment for adult crowding, using Invisalign aligner and interproximal enamel reduction (IER), and changes in the volume of interradicular bone. METHODS A total of 60 cone-beam computed tomography (CBCT) scans from 30 adult patients (28 women, two men; 30 CBCTs pre-treatment, 30 post-treatment) were examined retrospectively in order to measure bone volume three-dimensionally. The patients' average age was 36.03 ± 9.7 years. The interradicular bone volume was measured with OsiriX at four levels in the anterior tooth areas of the maxilla and mandible. Differences in bone between T0 and T1 were analyzed with IBM SPSS 21.0 using the Wilcoxon test for paired samples. RESULTS Overall, a slight increase in the quantity of bone was found (0.12 ± 0.73 mm). There was a highly significant increase in bone in the mandible (0.40 ± 0.62 mm; P < 0.001), while in the maxilla there was a slight loss of bone, which was highly significant in the apical third (- 0.16 ± 0.77 mm; P = 0.001). CONCLUSIONS Overall, treatment for adult crowding using an aligner and IER appears to have a positive effect on interradicular bone volume, particularly in patients with severe grades of the condition (periodontally high-risk dentition). This effect is apparently independent of IER. This is extremely important with regard to the treatment outcome, since IER and root proximity have been matters of debate in the literature and teeth should remain firmly embedded in their alveolar sockets.
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Affiliation(s)
- Andreas Hellak
- Department of Orthodontics, University Hospital Giessen and Marburg, Campus Marburg, Georg-Voigt-Strasse 3, 35039, Marburg, Germany. .,Abt. für Kieferorthopädie, UKGM Standort Marburg, Georg-Voigt-Strasse 3, 35039, Marburg, Germany.
| | - Nicola Schmidt
- Department of Orthodontics, University Hospital Giessen and Marburg, Campus Marburg, Georg-Voigt-Strasse 3, 35039, Marburg, Germany
| | - Michael Schauseil
- Department of Orthodontics, University Hospital Giessen and Marburg, Campus Marburg, Georg-Voigt-Strasse 3, 35039, Marburg, Germany
| | - Steffen Stein
- Department of Orthodontics, University Hospital Giessen and Marburg, Campus Marburg, Georg-Voigt-Strasse 3, 35039, Marburg, Germany
| | | | - Heike Maria Korbmacher-Steiner
- Department of Orthodontics, University Hospital Giessen and Marburg, Campus Marburg, Georg-Voigt-Strasse 3, 35039, Marburg, Germany
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Incisor malalignment and the risk of periodontal disease progression. Am J Orthod Dentofacial Orthop 2018; 153:512-522. [PMID: 29602343 DOI: 10.1016/j.ajodo.2017.08.015] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2017] [Revised: 08/01/2017] [Accepted: 08/01/2017] [Indexed: 11/23/2022]
Abstract
INTRODUCTION The objective of this study was to investigate the association between incisor crowding, irregularity, and periodontal disease progression in the anterior teeth. METHODS Data collected over 35 years from men enrolled in the Veterans Affairs Dental Longitudinal Study included information concerning pocket depth and alveolar bone loss. Plaster casts of the maxillary (n = 400) and mandibular (n = 408) arches were available for baseline measurements. Periodontal disease in the anterior teeth was defined as per arch sum of pathologic pocket depth and sum of teeth with any alveolar bone loss in the anterior sextants. Incisor malalignment status was defined by the anterior tooth size-arch length discrepancy index and Little's Irregularity Index. Adjusted mixed effects linear models computed the beta (β) estimates and 95% confidence intervals (95% CI) of the amounts of change in periodontal disease outcomes by the level of malalignment. RESULTS In the anterior maxillary arch, crowding and spacing were significantly associated with an increased per-arch sum of pathologic pocket depth (β, 0.70 mm; 95% CI, 0.20-1.21, and β, 0.49 mm; 95% CI, 0.06-0.91, respectively). In the anterior mandibular arch, incisor crowding and irregularity were significantly associated with an increased per-arch sum of pathologic pocket depth (mild crowding: β, 0.47 mm; 95% CI, 0.01-0.93; severe irregularity: β, 0.94 mm; 95% CI, 0.50-1.38), and the sum number of teeth with alveolar bone loss (mild and moderate-to-severe crowding: β, 0.45 teeth; 95% CI, 0.08-0.82; and β, 0.45 teeth; 95% CI, 0.13-0.83, respectively; moderate irregularity: β, 0.34 teeth; 95% CI, 0.06-0.62). CONCLUSIONS Certain incisor malalignment traits (ie, maxillary incisor crowding, maxillary incisor spacing, mandibular incisor mild crowding, mandibular incisor moderate-to-severe crowding, mandibular incisor moderate irregularity, and mandibular incisor severe irregularity) are associated with significant periodontal disease progression.
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Lee WP, Kim HJ, Yu SJ, Kim BO. Six Month Clinical Evaluation of Interdental Papilla Reconstruction with Injectable Hyaluronic Acid Gel Using an Image Analysis System. J ESTHET RESTOR DENT 2016; 28:221-30. [DOI: 10.1111/jerd.12216] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Won-Pyo Lee
- Graduate Student, Department of Periodontology, School of Dentistry, Chosun University; Gwangju Korea
| | - Hee-Jung Kim
- Associate Professor and Chairman, Department of Prosthodontics, School of Dentistry, Chosun University; Gwangju Korea
| | - Sang-Joun Yu
- Associate Professor and Chairman, Department of Periodontology, School of Dentistry, Chosun University; Gwangju Korea
| | - Byung-Ock Kim
- Professor, Department of Periodontology, School of Dentistry, Chosun University; Gwangju Korea
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Ioannou AL, Koidou VP, Kamintzi GI, Hinrichs JE, Kotsakis GA, Romanos GE. Risk Indicators of Papillary Recession in the Anterior Maxilla. J ESTHET RESTOR DENT 2015; 27:367-73. [PMID: 25989062 DOI: 10.1111/jerd.12164] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
PURPOSE The interdental papilla is the portion of the gingiva that occupies the space between two adjacent teeth. When papillary recession occurs, an array of problems arises ranging from phonetics to food impaction and esthetic concerns. The aim of this study was to identify risk indicators for visible papillary recession in the anterior maxilla among a Caucasian population utilizing an advanced analytical approach. MATERIALS AND METHODS A dataset of 211 adult dentate Caucasian patients that had undergone intraoral assessment of midline papillary recession and extra-oral assessment of visible papillary recession during maximum ("Duchenne") smile was utilized. An enhanced analytical approach was employed to identify risk indicators for papillary recession. RESULTS Approximately one-third of the participants (38%) demonstrated papillary recession during maximum smile ("visible papillary recession"). An association between sex (male preference) and visible papillary recession was found in this sample population, while age was found to be a risk indicator for papillary recession in individuals over 65 years of age. CONCLUSIONS Visible midline papillary recession in the maxilla is a highly prevalent clinical entity in Caucasian individuals, thus the development of efficacious treatment modalities for papillary regeneration is necessary. Findings of the present study on risk indicators for visible papillary absence, namely sex and age, may facilitate clinicians in treating patient with compromised interdental aesthetics as well as identifying patients that are in high risk for loss of interdental tissues. CLINICAL SIGNIFICANCE Findings of the present study on risk indicators for visible papillary absence, namely sex and age, indicate the need for careful assessment and meticulous treatment planning with respect to preservation of the interdental tissues. The consideration of these risk indicators can help dentists to identify patients at risk for papillary recession.
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Affiliation(s)
- Andreas L Ioannou
- Advanced Education Program in Periodontology, University of Minnesota, Minneapolis, MN, USA
| | - Vasiliki P Koidou
- Advanced Education Program in Periodontology, University of Minnesota, Minneapolis, MN, USA
| | - Georgia I Kamintzi
- International Postgraduate Program in Orthodontics, The Maurice and Gabriela Goldschleger School of Dental Medicine, Tel Aviv University, Tel Aviv, Israel
| | - James E Hinrichs
- Advanced Education Program in Periodontology, University of Minnesota, Minneapolis, MN, USA
| | - Georgios A Kotsakis
- Advanced Education Program in Periodontology, University of Minnesota, Minneapolis, MN, USA
| | - Georgios E Romanos
- Department of Periodontology, School of Dental Medicine, Stony Brook, NY, USA
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Chan HL, Giannobile WV, Eber RM, Simmer JP, Hu JC. Characterization of periodontal structures of enamelin-null mice. J Periodontol 2013; 85:195-203. [PMID: 23646854 DOI: 10.1902/jop.2013.120651] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
BACKGROUND Enamelin-null (ENAM(-/-)) mice have no enamel. When characterizing ENAM(-/-) mice, alveolar bone height reduction was observed, and it was hypothesized that enamel defects combined with diet are associated with the periodontal changes of ENAM(-/-)mice. The aim of the present study is to compare the dimension of interradicular bone of ENAM(-/-) (knock-out [KO]) with wild-type (WT) mice, maintained on hard (HC) or soft (SC) chow. METHODS A total of 100 animals divided into four groups were studied at 3, 8, and 24 weeks of age: 1) KO/HC; 2) KO/SC; 3) WT/HC; and 4) WT/SC. Microcomputed tomography was performed, and the following measurements were made between mandibular first (M1) and second (M2) molars: relative alveolar bone height (RBH), crestal bone width (CBW), bone volume (BV), bone mineral content (BMC), and bone mineral density (BMD). The position of M1 and M2 in relation to the inferior border of the mandible was also determined at 24 weeks. All variables were analyzed by one-way analysis of variance and Dunnett test for pairwise comparisons. Morphologic analyses were conducted on hematoxylin and eosin-stained sections. RESULTS Radiographically, the enamel layer was absent in ENAM(-/-) mice. Interproximal open contacts were observed exclusively in ENAM(-/-) mice, and the prevalence decreased over time, suggesting that a shifting of tooth position had occurred. Additionally, in the two ENAM(-/-) groups, RBH was significantly lower at 8 and 24 weeks (P <0.02); CBW, BV, and BMC were significantly less (P <0.05) at 24 weeks. No differences in BMD were found among the four groups. The molars migrated to a more coronal position in ENAM(-/-) mice and mice on HC. Histologic findings were consistent with radiographic observations. After eruption, the junctional epithelium was less organized in ENAM(-/-) mice. CONCLUSION The interdental bone density was not affected in the absence of enamelin, but its volume was, which is likely a consequence of alternations in tooth position.
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Affiliation(s)
- Hsun-Liang Chan
- Department of Periodontics and Oral Medicine, University of Michigan School of Dentistry, Ann Arbor, MI
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From 2D to 3D: Construction of a 3D Parametric Model for Detection of Dental Roots Shape and Position from a Panoramic Radiograph-A Preliminary Report. Int J Dent 2013; 2013:964631. [PMID: 23554814 PMCID: PMC3608259 DOI: 10.1155/2013/964631] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2012] [Accepted: 02/03/2013] [Indexed: 11/30/2022] Open
Abstract
Objectives. To build a 3D parametric model to detect shape and volume of dental roots, from a panoramic radiograph (PAN) of the patient. Materials and Methods. A PAN and a cone beam computed tomography (CBCT) of a patient were acquired. For each tooth, various parameters were considered (coronal and root lengths and widths): these were measured from the CBCT and from the PAN. Measures were compared to evaluate the accuracy level of PAN measurements. By using a CAD software, parametric models of an incisor and of a molar were constructed employing B-spline curves and free-form surfaces. PAN measures of teeth 2.1 and 3.6 were assigned to the parametric models; the same two teeth were segmented from CBCT. The two models were superimposed to assess the accuracy of the parametric model. Results. PAN measures resulted to be accurate and comparable with all other measurements. From model superimposition the maximum error resulted was 1.1 mm on the incisor crown and 2 mm on the molar furcation. Conclusion. This study shows that it is possible to build a 3D parametric model starting from 2D information with a clinically valid accuracy level. This can ultimately lead to a crown-root movement simulation.
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La patologia orale tabacco-correlata. DENTAL CADMOS 2013. [DOI: 10.1016/s0011-8524(13)70007-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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WITHDRAWN: La patologia orale tabacco-correlata. DENTAL CADMOS 2012. [DOI: 10.1016/j.cadmos.2012.07.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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Reichert C, Hagner M, Jepsen S, Jäger A. Interfaces between orthodontic and periodontal treatment: their current status. J Orofac Orthop 2012; 72:165-86. [PMID: 21744196 DOI: 10.1007/s00056-011-0023-6] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
The contextual relationships between orthodontics and periodontology are diverse and complex. While the consequences of orthodontic tooth movements are discussed in terms of possible damage and improvements in the long-term health of periodontal tissues orthodontic treatment of adults is a routine clinical procedure nowadays, even in patients presenting already-damaged periodontal tissues. As developments in both fields have been so rapid, there is a constant need for evidence-based concepts in this interdisciplinary field. The goal of this review was to discuss the latest aspects of interdisciplinary treatment and to reflect on the latest developments in research. A treatment scheme is also presented which aims to facilitate coordination of the orthodontic treatment of patients with periodontal diseases.
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Saga AY, Maruo IT, Maruo H, Guariza Filho O, Camargo ES, Tanaka OM. Treatment of an adult with several missing teeth and atrophic old mandibular first molar extraction sites. Am J Orthod Dentofacial Orthop 2011; 140:869-78. [DOI: 10.1016/j.ajodo.2010.06.027] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2009] [Revised: 06/01/2010] [Accepted: 06/01/2010] [Indexed: 10/14/2022]
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Influence of root parallelism on the stability of extraction-site closures. Am J Orthod Dentofacial Orthop 2011; 139:e505-10. [DOI: 10.1016/j.ajodo.2010.11.019] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2009] [Revised: 11/01/2010] [Accepted: 11/01/2010] [Indexed: 11/23/2022]
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18
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Chow YC, Eber RM, Tsao YP, Shotwell JL, Wang HL. Factors associated with the appearance of gingival papillae. J Clin Periodontol 2010; 37:719-27. [DOI: 10.1111/j.1600-051x.2010.01594.x] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Avila G, Galindo-Moreno P, Soehren S, Misch CE, Morelli T, Wang HL. A Novel Decision-Making Process for Tooth Retention or Extraction. J Periodontol 2009; 80:476-91. [DOI: 10.1902/jop.2009.080454] [Citation(s) in RCA: 80] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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